EP 0528757 B1 19950920 - Brewing device for a coffee machine and method for preparing coffee.
Title (en)
Brewing device for a coffee machine and method for preparing coffee.
Title (de)
Brüheinrichtung für eine Kaffeemaschine und Verfahren zur Herstellung von Kaffee.
Title (fr)
Dispositif d'infusion pour une machine à café et méthode pour faire du café.
Publication
Application
Priority
CH 228291 A 19910730
Abstract (en)
[origin: EP0528757A1] The brewing device comprises a brewing cylinder (9) having a cylindrical bore (10) in which a lower plunger (8) is arranged so as to be freely movable and longitudinally displaceable. An upper plunger (7) is firmly connected to a frame (1). Parallel to the vertically arranged brewing cylinder (9) there is a drive spindle (6) which has guiding means (23). A carrier member (24) connected to the brewing cylinder has further guiding means (25) which are engaged with those of the drive spindle (6). By rotating the drive spindle (6) in one direction or the other, the brewing cylinder is moved upwards or downwards. The brewing cylinder is filled with ground coffee via a funnel (12) which can be pivoted out. In order to determine the quantity of ground coffee contained, the brewing cylinder is moved upwards under time control, at least until a counter force produced by the upper plunger (7) over the compressed ground coffee is as great as the driving force of the spindle. In order to allow the preferred brewing of loose ground coffee, the brewing chamber formed between the two plungers (7, 8) is slightly enlarged again before the actual brewing operation. The device is distinguished particularly by its simple construction with few parts subject to wear, the simple construction being enhanced by the omission of limiting switches as a result of the complete time control of the drive spindle. <IMAGE>
IPC 1-7
IPC 8 full level
A47J 31/24 (2006.01); A47J 31/36 (2006.01); A47J 31/40 (2006.01)
CPC (source: EP US)
A47J 31/3614 (2013.01 - EP US); A47J 31/3619 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0528757 A1 19930224; EP 0528757 B1 19950920; AT E128016 T1 19951015; CA 2092911 A1 19930131; CA 2092911 C 20001121; CZ 283020 B6 19971217; CZ 70693 A3 19931013; DE 59203743 D1 19951026; DK 0528757 T3 19960122; ES 2078720 T3 19951216; FI 101592 B1 19980731; FI 101592 B 19980731; FI 931389 A0 19930326; FI 931389 A 19930326; GR 3018056 T3 19960229; JP 2516321 B2 19960724; JP H05506389 A 19930922; KR 100219010 B1 19990901; US 5316781 A 19940531; WO 9302605 A1 19930218
DOCDB simple family (application)
EP 92810573 A 19920728; AT 92810573 T 19920728; CA 2092911 A 19920728; CH 9200155 W 19920728; CZ 70693 A 19920728; DE 59203743 T 19920728; DK 92810573 T 19920728; ES 92810573 T 19920728; FI 931389 A 19930326; GR 950403153 T 19951110; JP 50315392 A 19920728; KR 930700985 A 19930330; US 3021993 A 19930325